Tens transfer mechanism for



Jan. 19, 1943. 0. J. SUNDSTRAND 2,308,940

TENS TRANSFER MECHANISM FOR ACCOUNTING MACHINES Original Filed June 22,1939 3 Sheets-Sheet l o J SUNDSTRAND 2,308,940

TENS TRANSFER MECHANISM FOR ACCOUNTING MACHINES OSCAR J. SUNDSTRA NDOriginal Filed June 22, 1939 5 Sheets-Sheet 2 Jan. 19, 1943.

Jan. 19, 1943. o. J. SUNDSTRAND 2,308,940

IENS TRANSFER MECHANISM FOR ACCOUNTING MACHINES Original Filed June 22,15559 5 Sheets-Sheet 3 L m 4/ 4/ 4, j? 45 45 x 9v Z7 55 97 5i C 3 0 g;Z; 84 48 32 35 QMW OSCAR J. SUNDSTRAND Patented Jan. 19, 1943 TENSTRANSFER MECHANISM FOR I ACCOUNTING MACHINES Oscar J. Sundstrand, WestHartford, Conn, as-

signor to Underwood Elliott Fisher Company, New York, N. Y., acorporation of Delaware Original application June 52, 1939, Serial No.280,568. Divided and this application June 27,

1940, Serial No. 342,737.

March 15, 1940 a division of my co-pending application Serial No.280,568, filed June 22, 1939. This divisional application relates to aregister mechanism, and more particularly to the provision of a simple,compact register unit having a single set of transfer elements common toall the registers and efi'ective for both addition and subtraction tocarry from one denominational order wheel to the next higherdenominational order wheel.

With this and incidental objects in view, the invention consists incertain novel features of construction and combinations of parts, theessential elements of which are set forthin appended claims, and apreferred embodiment of which is hereinafter described with reference tothe drawings which accompany and term part of the specification.

In the drawings:

Figure 1 is a perspective view of an accountlng machine embodying theinvention,

Figure 2 is a diagrammatic view of the keyboard,

Figure 3 is a right side elevation showing the adding and subtractingregisters, certain of the controls therefor, the type bars and actuatingmechanism,

Figure 4 is a detail perspective view of the add- I GENERAL DESCRIPTIONThis machine is an improvement on my U. S. Patent No. 2,194,270. Themachine includes the customary keyboard with amount keys, date keys andoperation controlling keys. It has the customary traveling papercarriage that is autorznatically tabulated from column to column. Thecarriage includes a control plate carrying a series of magazines havinglugs for automatically controlling the various operations of the machinethat may be initiated manually by the keyboard. The machine includesfour adding and subtracting registers in addition to the usualcrossfooter, this latter being omitted in the drawings, since it has noparticular bearing on the present invention.

All of the registers and the crossfooter are actuated by a common set ofactuators adjustable under control of stops set bythe amount keys. Theseactuators also control the adjust- In Great Britain 4 Claims. (Cl.235-137) ment of type for printing amounts and totals.

The registers are mounted one above the other, and are operated by racksconnected to the actuators and having two sets of teeth. A single set oftransfer elements, common to all of the registers, is arranged to effecta transfer from one denominational order to the next higherdenominational order, whether the necessity for such transfer arisesfrom an adding or a subtracting operation. Selection of the registersmay be performed manually by depressing one of four register keys, orautomatically by the depression of control levers by the carriagecontrol lugs.

Totals are taken from the registers by operating the machine through ablank cycle, during which the selected register is engaged with theadding side of the racks, and then bydepressing the register total key(or by operating the corresponding carriage control) and again cyclingthe machine.

Sub-totals are taken from the registers in the same manner except thatthe register sub-total key is operated instead of the register totalkey.

Subtraction in a register is accomplished in substantially the samemanner as addition, except that the register subtract key (or itscorresponding automatic carriage control) is actuated before the machineis cycled, to engage the selected register with the subtracting insteadof the adding side of the racks.

DETAILED DESCRIPTION INDEX or Torres 1. The machine sections andactuating mechanism.

. Adding and subtracting registersin general.

. Transfer mechanism.

. Selection of the registers.

. Engagement of the registers for an adding or subtracting operation.

. Actuation of the registers.

l. The machine sections and actuating mechanism Referring to Figure 1,the machine includes the customary keyboard having amount keys l and amotor bar 2, a paper carriage 3, laterally movable along a track 4 andcarryi a roller platen 5, around which paper is inserted for printing bytype bars 6, and a plate l fixed on the carriage, having a plurality ofcontrol mag azines 8 for automatically controlling various machineoperations as the carriage tabulates from column to column.

The machine also has four registers designated A, B, C and D in Figure3. Each register is comprised of a plurality of ten tooth wheels, andeach is operable for addition and subtraction.

Situated in front of the registers is a crossfooter (not shown) having aplurality of twenty tooth wheels, and likewise capable of both additionand subtraction. This crossfooter and its operating mechanism isidentical with that disclosed in the before-mentioned U. S. Patent No.2,194,270.

The machine is operated by an actuating shaft 9 that is connected to anelectric motor drive in such manner that the shaft is rocked, first,counter-clockwise, and then clockwise, during each cycle of the machine.The motor (not shown) is started by closing suitable switch mechanismunder control of motor bar 2, or a corresponding carriage control lever.Simultaneously, the motor drive is coupled with the shaft 9 by suitableclutch mechanism to initiate the above described oscillatory movement tothe shaft.

Two similar arms ill, only one of which is shown, are secured to driveshaft 3, and are each provided with rollers such as II that rest in camslots in the forward ends of two similar arms such as i2, pivoted on arod I3 and situated on opposite sides of type bars 6. A series ofactuating levers such as l4, there being a lever for each type bar, arepivoted on rod l3 between arms l2, and are tensioned clockwise about therod by springs such as i5 so that the upper edges of the levers restagainst a tie-rod I6 secured between arms [2. The forward ends of leversi 4 are each pivoted at H to their corresponding type bars 6, which areguided for vertical movement in the machine frame. The rear end of eachlever I4 is connected by pinand-slot connection l8 to a bell crank l9,also pivoted on rod l3 adjacent each actuating lever. The rear ends ofbell cranks 19 are pivoted at 20 to corresponding register actuatingracks 2|, guided for vertical movement in the machine frame. Springssuch as 22, connected between each bell crank and lever, normallytension the bell cranks counter-clockwise about rod l3 so that the pinsof pin-and-slot connections l8 are urged toward the upper edges of theslots for transfer purposes to be later described.

Operation of the machine causes arms In and i 2 to be raised and loweredduring each cycle. As rod l6 rises during the first half of the cycle,actuators i4 raise such of the type bars 6 as are free to rise undertension of springs l5, and the corresponding actuating racks 2| aresimultaneously lowered. As rod i6 descends. during the second half ofthe cycle, the actuators are restored, restoring the type bars and racksto the normal position shown in Figure 3.

The extent of vertical movement of the type bars and racks is controlledby stops (not shown) that are moved by amount keys I (Figure 1) into thepath of vertically disposed rods 23, connected to the forward ends ofarms 24 of type bars 6. Printing is effected by hammers 25 that aretripped to strike impression type carried by the type bars shortly afterall the bars have risen to their fullest extents as determined by theamount indexed on the keyboard.

2. Adding and subtracting registers-in general The registers A, B, C andD (Figure 4) are each composed of a number of ten tooth wheels 26rotatably mounted on shafts 21. Shafts 21 nection with the B register).

are situated one above the other and extend across the racks between theadding side 23 and the subtracting side 23, and are mounted at theiropposite ends in brackets such as 30, slidably mounted for horizontalmovement on cross bars 3| fixed in the machine frame. Wheels 26 arenormally held in neutral position, out of mesh with the racks, and areengageable with either side of the racks by shifting the registersbodily into mesh therewith. The wheels are held against improperrotation while in neutral position by detents such as 32 (best shown incon- These detents are connected between arms such as 33 pivoted at 34on brackets 33. Each right arm 33 carries a pin 35 that extends throughan aperture in a stationary plate 36 into a slot 31 (see the D register)in a cam 33 pivoted at 33 on plate 36,

The lower ends of cams 33 are slotted to receive the ends of shafts 21.Cam slots 31 are so shaped that when the registers are in neutralposition, detents 32 are cammed downwardly into engagement with thewheels to prevent improper rotation. When the register is shifted toengage either side of the racks, oscillation of cam 33 about pivot 33incident to such shifting. cams the detents upwardly out of engagementwith the wheels, leaving them freely rotatable by whichever side of theracks they have engaged.

3. Transfer mechanism A single set of .transfer elements common to allof the registers is arranged to effect a carry of 1" from a wheel oflower order to the wheel of next higher order.

As before stated, bell cranks I9 (Figure 3) are normally tensionedcounter-clockwise about rod l3 by springs 22, urging the pins of thepin-andslot connections l3 upwardly toward the upper edges of the slots.These slots are of sufficient width to permit an additional one toothstep of movement to the corresponding rack 2| of each bell crank I 9under the tension of springs 22. All of the racks are restrained fromthis additional step of movement by bell cranks 43 (Figure 4) pivoted at53.

The horizontal arms on each of these bell cranks have flanges 40 thatengage lugs 4| on each rack of the next higher order, and the verticalarms of the bell cranks have flanges 42 that engage shoulders 43 formedon extensions 44 of slides 45, there being a slide 45 and another slide48 for each denominational order. Springs 41 tension bell cranks 49counter-clockwise about pivot 53 and flanges 42 against shoulders 43, inwhich position flanges 40 restrain racks 2i of the next higher orderfrom rising the additional step of movement. The units rock is heldperma nently against this additional step of movement by any suitablemeans such as the stationary element 332 disclosed in U. S. Patent No.2,194,270.

Weak springs 43, connected individually to each of the slides 45 and 43,tension the slides downwardly m t a cross bar 3|, in which positionshoulders 43 lie in the plane of flanges 42. Each pair of slides 43 and43 is connected for parallel uniform movement by a pin 32 fixed in oneslide and extending into an opening 53 in the other. Each slide 46 hasinwardly projecting lugs such as 54 on one side thereof opposite eachregister, and each slide 45 has similar inwardly projecting lugs such as36 on the opposite side of the slide opposite each register. The lugs 34are engageable by transfer lugs such as 53 on one face of each registerwheel 28, and the lugs 58 are engageable by transfer lugs such as 51diametrically opposite to lugs 55 and on the opposite face of eachregister wheel 28.

Addition and subtraction in the registers is effected on the up-strokeof racks 2 I, hence when the register is engaged with adding side 28,wheels 26 are rotated clockwise, whereas when the register is engagedwith the subtraction side 29, the wheels are rotated counter-clockwise.When transfer lug 51 rests immediately above its corresponding lug 58,wheels 28 are at Addition of an amount in a register sumcient to rotateany wheel clockwise from "9 to 0" causes its lug 51 to engage itscorresponding lug 56 and raise slide 45 to remove shoulder 43 frombehind flange 42, whereupon bell crank 49 rocks counter-clockwise,allowing the next higher order rack 2i to rise the additional step ofmovement to rotate the next higher order wheel a distance of one toothto eifect the transfer additively.

Similarly, subtraction of an amount suillcient to rotate a wheel 26counter-clockwise from 0? to 9 causes its lug 55 to engage itscorrespond-' ing lug 54 and raise slide 48, which, through itsconnection with slide 45, raises this slide also to eifect a transfersubtractively in the same manner as above described in connection withan adding operation.

This transfer movement occurs toward the end of a machine cycle, thetransfer mechanism and racks being reset to their initial position atthe beginning of the next cycle by a cross bar 58, arranged to swingbell cranks .49 clockwise sufnciently to restore the racks and to causeflanges 42 to again engage shoulders 43 of the slides, the latterdescending under tension of springs 48. Cross bar 58 corresponds to thecross bar 318 in the previously mentioned Batent No. 2,194,270, and theresetting mechanism is identical with that disclosed in that patent.

automatically. Manual selection oi the registers is accomplished bydepressing one of four keys designated A register, 13 register, '0register and D register, in Figures 2 and 3.

Referring particularly to Figure 3, four balls 85 are pivoted on rods82, and lie directly beheath the stems of the register selecting keys.The lower portions of these balls are slotted to receive upstandingprojections of slides 83 to 58 extending to the rearof the machine. Attheir rear ends the slides 63 to 88 have upstanding pro- ,iections lyingdirectly behind downwardly extending shoulders on balls such as 61pivoted on a rod 1]. At their opposite sides, the bails 61 have pivotedthereto links such as 72 (Figure 5),

which in turn are pivoted to engaging links such 1 as it, there being anengaging link for each register.

As shown in Figure 5, there is a pin-and-slot connection between eachlink 12 and its corresponding engaging link '56, to provide for amovement of any of the links 12 without a corresponding movement of theengaging links.

By the train of connections just described, depression of one of theregister selecting keys A to D oscillates one of the bails 8i clockwiseand pulls one of the slides 63 to 6B forward. This rocks thecorresponding bail iil clockwise and raises the corresponding links 72.Four studs TI to 80 are secured to a member 81! held against a verticalmovement in a manner to'be later exgaging link 16 will be free to moveup a short displained. Springs such as 82 are connected to each engaginglink and to the, machine frame to tension the forward ends of the linksupwardly. The rear ends of the engaging links are pivoted to arms 88,secured to shaits 84 (see also Figure 4) that are connected bypin-and-slot connections 85 to sliding brackets 30 of each register.

From this construction, it is seen that when one of the links 12 israised by depression of its register selecting key, the correspondingentance under the tension of its corresponding spring 82, when studs 11to are moved into alignment with notches 86 provided in engaging links18.

Automatic selection of the registers is controlled by magazines such as8' (Figure 3) secured on the carriage control plate I. The rear end ofeach slide 83 to. 68 rests in front of a depending arm of a bell cranksuch as 81 pivoted at 88 and having a horizontal arm supporting a pinsuch as 89, guided for vertical movement in the machine frame. The upperend of each pin 88 rests beneath a selector lever 98 extendingtransversely of and pivoted in the machine frame, there being a separateselector lever for each register. The construction and operation ofthese automatic selector levers is disclosed in the before-mentionedPatent No. 2,194,270. Suflice it, therefore, to say that when a magazine8 in a given columnar position contains a'lug such as iii to select;particular register, its corresponding lever 80 is depressed, rockingit's bell crank 81 clockwise and thrusting .the corresponding slide 88to 56 forward the same as when the. register key for that particularregister is depressed, as above described.

5. Engagement of the registers for an adding or subtracting operationAfter a register has been selected as above described, it is engagedwith either the adding or subtracting side of the racks 2|, on the ensu-Eng machine cycle, by mechanism which may be similar to that disclosedin the principal application Serial No. 280,568. Briefly, this mechanismcomprises means for selectively shifting member 8| either forwardly orrearwardly, as the case may be, to engage wheels 2| with either addingside 28 or subtracting side 25 01' racks 2|. This mechanism is shown inFigure 3, and it will be clear from reference to the description in theabove mentioned application, that this shifting movement of member 8|occurs in proper timed relation with the raising and lowering of racks2|, to eifect the desired operation.

6. Actuation of the registers Actuation of the registers occurs duringthe latter half of the machine cycle, the engagement of the registerstaking place just after rack 2| are lowered.

As before stated, the amount of movement imparted to the racks isdetermined by stops set by indexing an amount in the keyboard. When aregister is engaged with the adding side 28 of racks 2i, its wheels 26are rotated clockwise as the racks rise, and conversely when a registeris engaged with the subtraction side 29, its wheels 25 are rotatedcounterclockwise.

While the form of mechanism herein shown and described is admirablyadapted to fulfill the objects primarily stated, it is to he understoodthat it is not intended to confine the invention to the one form ofembodiment herein disclosed,

tor it is susceptible of embodiment in various forms all coming withinthe scope of the claims which follow.

What i claimed is:

1. In a machine of the class described, a totalizer having ten-toothwheels and a set of devices for transferring from one denominationalorder to the next, actuating means for driving the wheels in onedirection for addition, and in the opposite direction for subtraction,and two lugs on each wheel, one of which trips its transfer deviceduring addition, and the other of which trips the same transfer deviceduring subtraction.

2. In a machine of the class described, a totalizer having ten-toothwheels and a set of devices for transferring from one denominationalorder to the next, actuating means for driving the wheels in onedirection for addition, and in the opposite direction for subtraction,and .two diametrically opposed lugs on each wheel, one of which trips ittransfer device during addition, and the other of which trips the sametransfer device during subtraction.

3. In a machine of the class described, a totalizer having ten-toothwheels and a set of devices for transferring from one denominationalorder to the next, actuating means for driving the wheels in onedirection for addition. and in the opposite direction for subtraction,and two lugs on each wheel, one of which trips its transfer deviceduring addition, and the other of which trips the same transfer deviceduring subtraction, the said lugs being situated on the opposite facesof the wheels.

4. In a machine of the class described, a totalizer having ten-toothwheels, means for entering numbers thereon additively and subtractively,each wheel of the totalizer having two transfer lugs thereon, one lugsituated on one face of each wheel, and the other lug on the oppositeface of each wheel, and a set of transfer elements controlled by thelugs on one face for transferring during adding operations andcontrolled by the lugs on the opposite face for transferring duringsubtracting operations.

OSCAR J. SUNDSTRAND.

